Atlas FC104-T70 Specificaties
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FC104 Series
4" High-Compliance Loudspeaker with Transformer
Applications
Utilize Atlas Sound 4" high-compliance loudspeaker Model FC104 for
voice trans mis sion, music and signal re pro duc tion in commercial, in dus tri-
al and in sti tu tion al applications of all kinds, especially those where a high
performance loud speak er is required and wide dispersion is demanded.
General Description
This compact, full-range, 4" (127 mm) loudspeaker is equipped with a
damped, high-compliance cone which provides excellent low fre quen cy
re pro duc tion and smooth extended response. Model FC104 also offers
a wide dispersion angle which reduces the number of loudspeakers
nec es sary to achieve total cov er age in low-level dis tri bu tion systems.
The 10 watt, 8Ω model (w/o transformer) offers a frequency response
range of 150 Hz – 17 kHz, sensitivity of 94 dB (1 W / 1 M) and a disper-
sion angle of 135° (-6 dB, 2 kHz octave band). The unit contains a 10 oz
(283 g) ce ram ic magnet with a flux density of 10,500 gauss. Loudspeaker
is available with three different factory installed line matching transform-
ers to meet a variety of project requirements. A dual-purpose bracket
securely mounts the transformer in a low profile position and enables
torsion spring mounting found on many Atlas Sound baffles. (Bracket
not included on base model FC104.) For additional information on Atlas
Sound Transformer models, refer to #SL1-1369.
Features
• Industry Standard, 10 watt, 4" High-Compliance Loudspeaker
• Offers Proven Performance with Wide-Angle Sound Dispersion
• Efficient Wide-Range Frequency Response
• V ersatile 8 watt, 70.7V (25V / 70.7V with model LT-87) Transformer
with taps from .5 – 8 watts
• Ideal for Public Address and Background Music Installations
• Mounts In a Large Selection of Atlas Sound 4" Enclosures and Baffles
1601 JACK MCKAY BLVD. ENNIS, TEXAS 75119 U.S.A.
TELEPHONE: (800) 876-3333
FAX (800) 765-3435
FC104T
(Shown with Transformer. Bracket is
not supplied unless transformer version
is ordered.)
Base Speaker Specifications
Speaker Size
4" (127 mm) (5" E.I.A. Standard)
Speaker Type
High Compliance
Power Rating
10 watts Program
150 Hz – 17 kHz (± 5 dB)
Frequency Response
Magnet, Ceramic
10 oz. (283 g)
Resonance
101 Hz
8Ω
Voice Coil Impedance
Voice Coil Diameter
1" (25 mm)
Flux Density
10,500 Gauss
Depth (w/o Transformer)
2
⁄
" (57 mm)
1
4
94 dB (1W / 1M)
Sensitivity (Peak)
Dispersion
135° (-6 dB, 2 kHz Octave Band)
FC104-T70
Transformer Model
LT-70
Primary Voltage
70.7V
Transformer Freq. Resp.
100 Hz – 10 kHz (±1.5 dB)
.5, 1, 2, & 5 watts
Primary Taps
Secondary Impedance
8Ω
Insertion Loss (Max)
1.5 dB
Core Size
⁄
" x
1
2
5 watts
Power Rating
FC104T72
LT-72
Transformer Model
Primary Voltage
25V / 70.7V
Transformer Freq. Resp.
100 Hz – 10 kHz (±1.5 dB)
.5, 1, 2, & 4 watts
Primary Taps
Secondary Impedance
8Ω
Insertion Loss (Max)
1.5 dB
Core Size
⁄
" x
1
2
4 watts
Power Rating
FC104T
LT-87*
Transformer Model
Primary Voltage
70.7V
Transformer Freq. Resp.
50 Hz – 15kHz ±1.5dB
Primary Taps
.5, 1, 2, 4, & 8 watts
4Ω & 8Ω
Secondary Impedance
Insertion Loss (Max)
.6 dB
Core Size
1" x
Power Rating
8 watts
* FC104T includes a special version of Model HT87 transformer that
includes a .5 Watt tap.
AtlasSound.com
⁄
" (13 mm x 16 mm)
5
8
⁄
" (13 mm x 16 mm)
5
8
⁄
" (25 mm x 19 mm)
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